Heating torch burner



Patented Sept. 26, 1944 UNITED STATES PATENT OFFICE v 7 359,251

G TORCH.BURNER -Har ld G. Seamans, Spring Lake, Mich. Avp icatiq Jilly11,0, 1 i N 8 1 Claim.

My present invention relates to; improvements n h a ing torch burne a dparticularl to heat,- ing torch burners employing the flame of a co n.-bustible fuel consisting of gas and oxy en for heating, to harden or toanneal ferrous metal bodies; and the objects of improvementare, first,to providea heating torch burner, whereby a com.- .bustible fuelcomposed-of naturalgas and oxygen can be employed to producetheicombustionflame having the intense heat temperature required forheating heavy ferrous metalbodies; second, to provide a heating torchburner that will produce from natural gas and oxygen a combustion-flameequally high in heat units as flame produced-by like burners employingacetylene gas and oxygen; third, to provide a heating torch burner thatis simple to construct; fourth, to provide a heating torch burner thatis not liable to disorder; fifth, to provide a heating torch burner thatcan be readily cleaned internally; sixth, to provide a heating torchburner that will be cheap to produce.

I attain these named objects and such other objects as may appear from aperusal of the following description, when said description is taken inconnection with the structure disclosed in the accompanying drawing, inwhich Figure l is a side elevation view of my improved heating torchburner, the view showing the slot at one end from which the combustionflame issues, the combustible fuel supply pipe by which the combustiblefuel is delivered to the burner and the cooling fluid conductor pipes bywhich the cooling fluid is delivered to and conducted from the burner.

Figure 2 is an elevation view of my heating torch burner illustratingthe end with the combustion flame slot and cornbuti ble fuel dischargenozzles therein.

Figure 3 is an elevation view of my heating torch burner illustratingthe end thereof with the combustible fuel supply pipe and pooling fluidpipe passages into which is secured their respective pipes.

Figure 4 is a side elevation view of the burner body member, showing thecombustion flame slot, one of the combustible fuel longitudinal transferpassages and cooling fluid transversely extending header passage.

Figure 5 is a longitudinal sectional view of my heating torch burnertaken on a horizontal plane looking downward from line IV, IV, of Figure1, the view showing the passages through which the combustible fuel isconducted from the supply pipe, to the nozzles hustionflame slot.

Eigure v6 is a longitudinal sectional view of my heating torch burnertaken on a horizontal plane an he h us t he comlooking downward fro'm'line V, V,1of Figure l, the view showing the passages through which thecooling fluid flows in cooling the burnerto prevent over heating. I

Figure-7 is a crossesectional View of. my heating torch burner taken on.a vertical plane extending transversely thrqugh'the burner Ion line X,X, of Figure 1, andas when looking ineither direction fromsaid line.

Throughout the several similar numerals designate similar parts orportio ns,of my improved heating torch burner; and referring thereto-Numeral l, designates the body portion of my heating torch burner havingtherein at the back end thereof longitudinally extendin combustible fuelsupply passage 2 into which extends combustible fuel conductor tube 3,the combustible fuel supply passage 2 being open to transverselyextending combustible fuel passage 4 joined at the ends thereof topassages 5 extending longitudinal of the burner body and connected tocombustible header passage 6 from which extend a plurality of nozzles Iof a desired size and at each side of the plurality a nozzle 8 which isslightly larger in crosssectional area than the nozzles I. Extendingtransversely across the burner is combustion flame slot 9 into which theseveral nozzles discharge the combustible fuel and in which ignition ofthe combustible fuel takes place. Cover plates l 0 closing the severalpassages and the header within the burner body I, and have at the endsof passage 4, pockets I I that cause eddy currents within thecombustible fuel before it enters the passages 5, and at the ends of theheader passage 6, pockets l2 by which additional eddy currents arecaused within the combustible fuel and by reason of these eddy currentscause a complete mixing of the gas and oxygen beyond the extent they aremixed before delivery to the burner. Pipe [3 having connection with asource of cooling fluid supply, extends into passage l4 through whichcooling fluid flows to the transversely extending passage l5 andtherefrom to passage l6 and to the pipe I! whereby the cooling fluid isconducted away from the burner. At each end of the header passage H5 inthe cover plates I, are cushion pockets [8, and from the said headerpassage 15, at such times as the heating torch burner is used forheating metal bodies that require cooling directly after a portion hasbeen heated, cooling fluid spray nozzles views of the drawing,

- which discharge into 2 may be drilled through the end of the burnerbody into the cooling fluid passage H: at numeral l9, the said nozzlesbeing no part of my present invention are not shown.

In the operation of my improved heating torch burner, it is preferablymechanically supported in close relation to the metal body to be heated,and when so supported, a cooling fluid such as water is conducted from asource of supply to the cooling fluid passages within the burner body bythe tube 13 as shown in the drawing, and which may have connection witha flexible extension to permit changing position of the burner inrelation to the metal body being heated, and from the passages withinthe burner body the cooling fluid is conducted away from the burner bodyby tubing such as I! of the drawing, and when the cooling fluid is incircula tion within the said passages the combustible fuel mixture ofgas and oxygen is admitted through conductor tube 3 to the transversepassage 4 from passage 2, at which place it flows in two directions tothe longitudinal passages 5 and therefrom into the nozzle header passage6 and therefrom the combustible fuel is discharged through the nozzlescomprising a plurality thereof of relatively small nozzles I and at eachend of the plurality, a nozzle of slightly greater capacity, which isrequired because the end nozzles of the plurality of closely spacing ofthe nozzles pick up oxygen from the atmosphere and therefor require agreater amount of gas to produce a like mixture as that of the smallernozzles, all of the combustion flame slot 9 wherein is combined thecombustible fuel discharged from all of the nozzles and therebyproducing a combustion flame of continuous heat the complete length ofthe flame slot, and uniform heating throughout the width of thecombustion flame front.

Having described my invention, the rights to which I desire to secure,are disclosed by the claim hereafter enumerated:

In a heating torch burner, the combination of an elongated rectangularbody having a transversely disposed combustible fuel passage adjacentone end of. the body and having a plurality of nozzles extendingtherefrom to the end of the body and having a cushion pocket at each ofits ends, a passage at each side of the body extending from the saidtransversely disposed combustible fuel passage substantially parallelwith the sides of the body and having a cover plate closing one side ofeach passage, another combustible fuel passage extending transversely ofthe body and open to both said combustion fuel passages having the coverplates and having a cushion pocket at each of its ends and extendingsubstantially parallel with one end of the body and having extendingtherefrom a combustible fuel supplypassage with a combustible fuelsupply pipe extending therefrom and a cooling fluid circulating passagecomprising cooling fluid supply and discharge passages having a portionadjacent the end of the body having the plurality of combustible nozzlesand extending transversely of the body [in substantial parallel relationto the transversely disposed combustible fuel passage and tubes forconducting cooling fluid to and from the cooling fluid circulatingpassage substantially'as described.

HAROLD G. SEAMANS.

